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논문 기본 정보

자료유형
학술저널
저자정보
윤용기 (Korea Railroad Research Institute) 김성진 (Korea Railroad Research Institute) 고경준 (Korea Railroad Research Institute) 박채옥 (Korail) 김용규 (Korea Railroad Research Institute)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제70권 제10호
발행연도
2021.10
수록면
1,517 - 1,525 (9page)
DOI
10.5370/KIEE.2021.70.10.1517

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초록· 키워드

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Through the construction of high-speed railways and the electrification projects, the railway ground was switched to the common grounding method with the individual(or independent) grounding method. The common grounding method can eliminate the potential difference between the equipment connected to the common grounding line, but the line is used for the path which the return current of a train flows. As a result, it has been confirmed that the impulse surge current invades the signal machine room through the ground wires of the track circuit cable that connects the track circuit devices in the field and the transmitter and receiver in the signal machine room. It was also confirmed that the grounding current that entered the signal machine room affects the grounding current of other equipment in the room. The grounding system inside the signal machine room consisted of the common grounding line buried along the track and a steel frame of the building structure, but the steel frame grounding of the building structure was used as a path for another impulse surge current to enter the room. The ground current that entered the signal machine room continued to adversely affect certain equipment in the machine room, causing the equipment to malfunction or eventually burn out. Therefore, in this paper, we analyze the state of the ground current in the signal machine room and present measures to prevent the impulse surge current from entering the room and suppress the generation of ground circulating current in the room.

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Abstract
1. 서론
2. 고속철도의 접지계통 및 귀선전류
3. 신호기계실에서의 접지전류 측정
4. 신호기계실의 접지설비 진단
5. 결론
References

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